微孔技術(shù)介紹：SCFoam technology introduced

SCFoam成型工藝是一種全新的緊密塑料成型技術(shù)，突破了傳統(tǒng)注塑的諸多局限，極大地改善了制件的翹曲變形和尺寸的穩(wěn)定性，同時(shí)在不降低機(jī)械性能的前提下節(jié)約原材料，降低加工成本。

The new technology is to inject the monophase solution which is the mixture of supercritical medium and molten polymer into the mold cavity. It makes the final product a honeycomb structure by changing the pressure of the core portion. It can reduce the usage amount of raw materials without reducing the mechanical strength.There is no limitation on the wall thickness and mostly applied to non-apperance requirement product.

在注塑、擠出以及吹塑等塑料成型工藝中，將超臨界態(tài)流體注入到塑化裝置中，當(dāng)超臨界流體與熔融原料充分混合/擴(kuò)散后，形成單相混合溶液。

將該混合溶液倒入模具型腔或口膜后，由于混合溶液外部的壓力變化，從而使用內(nèi)部出現(xiàn)大量氣泡核的析出現(xiàn)象，在隨后的冷卻成型過(guò)程中，氣泡核不斷長(zhǎng)大定型，從內(nèi)部有效抑制了樹(shù)脂材料在冷卻過(guò)程中的自然收縮，從根本上改善了精密塑料制品成型中難于控制的收縮問(wèn)題。

In the plastic molding process like injection molding,, extrusion and blow molding, the supercritical fluid is injected into the plasticizing equipment. When the supercritical fluid is well mixed/diffused with the molten raw material ,it forms a single phase mixed solution.

When importing the mixed sol into the mold cavity, the mixed melt produces great pressure drop. Therefore it forms a large number of bubble fusion internally. In the subsequent cooling forming process, the bubble fusion inside the melt continues to grow, and ultimately produces the supercritical microcellular plastic products.